Building-block.



` A. G. MAHLBE.

BUILDXNG BLOCK.

APPLICATION FILED NOV. Z1, 1907.

Patented Oct. 13,1908..

` w/TNESSES ADAMe. Mantra-'orf Maureen, YORK.

surname-BLOCK.

"Nasce-,vedi

Patented oct. 1e; 190e.-

' Application mgd'noyembe; 21, 1 ee7'. serialimioaie 't -fofj- Medford, the county Vof Smtiilk 4andV 'stat'eof New.. York, have invented .a new and `This invent-ion-'frelfatesy tohuilding blocks such as --are used foibliildings. 'The object of-the invention is to produce a' block ofsimple forni Which` can bevquic'kly in the construction of Walls laidfi-nconstructing Walls, an'dwhich is pro# (ii-'bonding the adjacent blocks. Affl'irther object ,of the invention is to providetne`an's forfacilitatiug the application.

of-'p aster ontheinner 'side of the v'val-l, and to provide an arrangement for bringing about a free' circulation oftheair fro'inthe interior Zoff the Wall` to the outside,- Without allowing .jtl'ieadnaission yof rain.

A further object of the invention provide th'e block Wi'th'mea-ns for making the horizontal joints between 'the lblocks water- 'PIfOoif 1y f v 'The invention. consists-,inthe 'con'structionV and combination .of,pa.rts to' beanoreffully 'described .hereinafter .and particularly set .3f forthinfthe' claiin's..

' eferencei-s'tobehadto theaccompanying; dravvingsforrningapart 'o flthis specifica# -':t ion, in .Whiehsimilarcharacters of reference section is taken on the o f-Fig.- 2 1; Fig.' 2, 'isf avertical lsection4 through lthe same building', block'. constructed according to iny invention 5f and Fig. 4 is "aplan showingfashoi-txp'ortion of a Wall :constructed of blocks.

.'45 formed'accordi'ng to myfinvention," certain parts-beingshovvnincrosssection.

Referring more particularly vto, the vand especially -to'fFig 3, 1represents the' block; -it is of 'substantiallyreetangular forin',' presentingtvvoehambers 8 andi-(4,1" which 'eX'- f 'vided'ivithimprovedfnieansfor' connecting y end. toend as v illustrate@ the' 'walls 0f the 'blocks come together soas to indicate corresponding part-s in all the figures.'y

' form a 'bonding 'space 15,' as' will. hev readily ,Figure .1's'faf'vertical'section through a 'portlonof a- Wal-1 formed vofi-,building blocks constructedaccording'.to myinvention;-tl1:is 4 ycrete 16 isfp'laced. This and extends lnone 'continuo'u'spiec'e'frornlthe lowerrovv to the. next vrow above, and' in'this "Way 'arm bond'or .connection ismade between two consecutive' :rows: When i the; 'blocks .are'plaid 'inhorizontal rows' inftlie staggeredrelatiom. inj'an upper row meet` w all; this View is Vcross lsection-0n the line, 2-'2.of -'Fig. 4; Fig. 3 is a `perspeetive"o ay lthe" ends of the'blocks y'overthe'bar' :ofa block in the-row below. t The bases vcompletely bridgethe .space above Partsso thatk at'eacli end orY the block projecting ribsor shoulders Qfare formed 'at its vertical edges. x

In this --Way a yrecess is fcrinedrin the vends 'of the bloclna'nd 1n the `lower 'portion of' this recess the end wall;v is

provided with anjoutwardly .projecting boss.' l0 of triangular 'foi-In.l i this boss -is substantiellyv Hush -with theribs the face of the triangular" plane of 'the'lower face ofl the' block.y --The boss is of less Width thanthe The. outer face of recess in the end ofthe bloclnso that gaps or spaces 11 are formed at each rside of theboss, ,l A as illustrated in l 4The' inner sides ofthe shoulders 9.-. are Y 'preferably rovided'w'ith beveled faces or.y 'edges' 12.

n theupper ,edge of the outer Wall of the block a longitudinallydisposed tonguelis formed;

arrangement beingsuch 'that theother asA illustrated -in (Figs. l' and 2. Tivo; adjacent blocl's-lyingin 'the same hori'.-V Zontal-rovv come face'to tace, so'lthat the outer\ face`s of lthe hosses 10' abut-against each-' in Fig. Il.' No mortar or- Aconcrete is laid' betweenethesemeeting faces.

otherya's illustrated However, when the.twoblockscomeftogether understood7 and lin this bonding space conconcrete hardens usual. manner; tha't gis,

' cementbond -at l this point 'is supported in spteifofjthe'fact thatlthe 'bar-5 is 'o f reduced width," as .s hown, Jandhas .a depressed face which .-'cqmmurceteirespectively with these andv on' 'the.' 1ower. edge'- .of thisI Wall-a corresponding groove 14 is` formefchthe when' 'the block .islaidup'on another block,

2. In layingthe depressed -'end the tongue and groove' interlock with each other, as illustratedin F blocks'to forin a iral1,-they arelaidqoneupon the block, as illustrated inFig. 2T" Fromlthis arrangement it becomes impossible for rain to'be driven into the interior of the block bythewind.`- W vInv-order to facilitate the application .of mortar on the inner Side of the wall after itlias been erected, I ormeachLblock 'in the mold witha veneer or 'facing 18 of'plaster' vof paris; as illustrated in Fig. 2 and 3. Thisl veneer is quitethin, but adheres tightlyto the face of the block and presents a neat appearance.v It also enables plaster to be applied withffacility on the lnner face of. thelwall, so that the cracks between the blocks will become .hidden and the interior "fof the wall will present substantially the same appearance as an4 ordinary -'plaster wall. The blocks arepreferably molded of` Having .tnsfescribd ym'y-'njventol I claim as new and. desire to secnre'byI,ietters Patent: y f A building block' ,havingend walls wit vertically disposed 'rbs'jat the sides thereof, and' bosses with tapereds'de edges'forrned ',o'n said end wallsrfeara horizontal face of said block, the enter-faces' of said 'bosses being substantially flush with the outerfaces vof said ribs whereb` a -bonding space is lformed between sai vribs and said bosses adapted to receive concrete to bond adjacent pressed.

In testimony whereof I have Sig-ned my witnesses.

.two subscribing 'concrete or similar material. Y

EVERARD, B. MARSHALL.

horizontal rows, thesaid end walls between sai-d ribs and said bosses being'flat and de'-4 y name to this specification in the presence of 

